ruby--ruby/spec/ruby/core/module/public_spec.rb

require_relative '../../spec_helper'
require_relative 'fixtures/classes'
require_relative 'shared/set_visibility'

describe "Module#public" do
  it_behaves_like :set_visibility, :public

  it "on a superclass method calls the redefined method" do
    ModuleSpecs::ChildPrivateMethodMadePublic.new.private_method_redefined.should == :after_redefinition
  end

  it "makes a private Object instance method public in a new module" do
    m = Module.new do
      public :module_specs_private_method_on_object
    end

    m.should have_public_instance_method(:module_specs_private_method_on_object)

    # Ensure we did not change Object's method
    Object.should_not have_public_instance_method(:module_specs_private_method_on_object)
  end

  it "makes a private Object instance method public in Kernel" do
    Kernel.should have_public_instance_method(
                  :module_specs_private_method_on_object_for_kernel_public)
    Object.should_not have_public_instance_method(
                  :module_specs_private_method_on_object_for_kernel_public)
  end

  ruby_version_is ""..."3.1" do
    it "returns self" do
      (class << Object.new; self; end).class_eval do
        def foo; end
        public(:foo).should equal(self)
        public.should equal(self)
      end
    end
  end

  ruby_version_is "3.1" do
    it "returns argument or arguments if given" do
      (class << Object.new; self; end).class_eval do
        def foo; end
        public(:foo).should equal(:foo)
        public([:foo, :foo]).should == [:foo, :foo]
        public(:foo, :foo).should == [:foo, :foo]
        public.should equal(nil)
      end
    end
  end

  it "raises a NameError when given an undefined name" do
    -> do
      Module.new.send(:public, :undefined)
    end.should raise_error(NameError)
  end
end